CN212849157U

CN212849157U - Mutual inductor and leakage protector suitable for automatic installation

Info

Publication number: CN212849157U
Application number: CN202022025810.6U
Authority: CN
Inventors: 钱加灿
Original assignee: Yuyao Jiarong Electronic Appliance Co Ltd
Current assignee: Yuyao Jiarong Electronic Appliance Co Ltd
Priority date: 2020-07-15
Filing date: 2020-09-16
Publication date: 2021-03-30
Anticipated expiration: 2030-09-16
Also published as: CN113948925A

Abstract

The utility model discloses a mutual inductor and a leakage protector suitable for automatic installation, which relates to the technical field of leakage protectors, and comprises a mutual inductor device, wherein the mutual inductor device comprises a mutual inductor shell, a mutual inductor arranged inside the mutual inductor shell, a hard electric connecting wire which is arranged on the mutual inductor shell in a penetrating way and passes through the inner ring of the mutual inductor, and a coil pin which extends outwards; the hard electric connecting wire and the coil pin are respectively electrically connected with the circuit board; the mutual inductor of the utility model adopts the design of the hard electric connecting wire, after the mutual inductor structure is installed, the power line can be electrically connected without penetrating into the inside of the earth leakage protector, the power line is connected with the circuit board, and simultaneously, each part can be fixed on the base from top to bottom, thus greatly improving the installation efficiency of the earth leakage protector and being beneficial to automatic assembly; the leakage protector of the utility model has more compact structure and smaller volume; the leakage protector can be miniaturized, and the application range of the leakage protector is wider.

Description

Mutual inductor and leakage protector suitable for automatic installation

Technical Field

The utility model belongs to the technical field of earth-leakage protector technique and specifically relates to a be suitable for mutual-inductor and earth-leakage protector of automatic installation.

Background

Along with the continuous progress of science and technology and society in modern society, the living standard of people is continuously improved, intelligent household appliances gradually enter the lives of people, the chances of people and electric contact are more and more, the condition that electric shock casualties occur due to the fact that electric equipment breaks down is caused, and in order to achieve personal safety and equipment property safety, the leakage protector serving as an effective electric safety technical device is widely used and plays a role in lifting weight. However,

because of the structural characteristics of the leakage protector structure in the prior art, the elements must be placed and assembled manually, automatic assembly cannot be realized, the production efficiency is greatly reduced, and particularly, the existing leakage protector cannot be automatically assembled due to the fact that a power line is directly matched with a mutual inductor in the installation process.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

The utility model discloses an above-mentioned defect to prior art existence especially provides a mutual-inductor and earth-leakage protector who is suitable for automatic installation, has solved the unable problem that is applicable to automatic assembly of current earth-leakage protector mutual-inductor structure part.

Second, technical scheme

In order to solve the technical problem, the utility model provides a mutual inductor suitable for automatic installation, which comprises a mutual inductor device, wherein the mutual inductor device comprises a mutual inductor shell, a mutual inductor arranged inside the mutual inductor shell, a hard electric connecting wire which is arranged on the mutual inductor shell in a penetrating way and passes through the inner ring of the mutual inductor, and a coil pin which extends outwards;

the hard electric connecting wire and the coil pin are respectively and electrically connected with the circuit board.

Be equipped with in the mutual-inductor casing and hold cavity and coil muff coupling post, mutual inductance coil cover is established on coil muff coupling post and is located and hold the cavity, has seted up the perforation on the coil muff coupling post, and the stereoplasm electricity is connected the line and is passed from the perforation.

Wherein, the mutual inductor casing is equipped with the electric connection draw-in groove on the double-phase relative lateral wall all, and the rigid electricity that passes the perforation connects the line both ends along the electric connection draw-in groove bending setting.

The number of the hard electric connecting wires is 2, and the hard electric connecting wires are respectively used for connecting a zero line and a live line in a power line.

The number of the hard electric connecting wires is 1, and the hard electric connecting wires are used for connecting the ground wires in the power line.

The connecting ends of the coil pins and the hard electric connecting wires are arranged upwards along the direction perpendicular to the axis of the mutual inductor, and the circuit board is positioned on the upper portion of the mutual inductor shell.

A leakage protector, comprising: the leakage protector comprises a base, a leakage protector arranged on the base, pins penetrating through the base and extending out of the bottom of the base, a mutual inductor device positioned on one side of the base, and a circuit board arranged on the upper portions of the base and the mutual inductor device.

The leakage protection device comprises a reset key, a reset stop block, a pressing guide block, an electromagnetic driving device and a spring plate, wherein the spring plate is embedded on the pin base;

the pressing guide block is clamped and arranged at one side of the top of the pin base and used for pressing and fixing the pin

The reset stop block can be movably arranged in the middle of the base up and down, extension ends capable of being abutted against the elastic sheets are arranged on two sides of the reset stop block, and the elastic sheets can be controlled to be electrically connected with the pins through the extension ends;

the electromagnetic driving device can drive the movable iron core penetrating through the electromagnetic driving device to perform linear motion, the extending end of the movable iron core is clamped with the vertical end of the clamping piece, and the reset stop block is provided with a clamping groove for the transverse end of the clamping piece to be inserted into;

the reset key vertically penetrates through the circuit board and is inserted into the reset block, and the transverse end of the clamping piece can be clamped with the reset key, so that the reset key can drive the reset block to move up and down;

the elastic sheet can move downwards under the action of the elastic force of the reset key and then is separated from the pin to be powered off when the reset key is pressed down, and the reset stop block can drive the elastic sheet to move upwards and contact the pin to be powered on when the reset key is reset and moves upwards under the action of the reset spring.

The upper part of the base is provided with a sliding groove which can enable the reset stop block to be inserted into the base from top to bottom, and the reset stop block can move up and down relative to the sliding groove.

The pins comprise a zero wire pin, a live wire pin and a ground wire pin; a sliding groove stop block is arranged on one side of the sliding groove, the pressing guide block can be arranged on the base from top to bottom along the guide of the sliding groove stop block, and the ground wire pin is pressed and fixed on the base through the bottom of the pressing guide block;

the outer side of the sliding groove stop block is also provided with a vertical clamping groove which is used for clamping and fixing the zero line pin and the live line pin in the vertical bending direction; the two sides of the compression guide block are respectively provided with a compression arm which extends out, and the zero wire pin and the live wire pin are respectively compressed and fixed in the vertical clamping groove through the compression arms.

The elastic sheet is electrically connected with the zero wire pin and the live wire pin through the electric connection ends.

Wherein, two pressure arm tip all are equipped with downwardly extending's guard plate, form shell fragment activity space between guard plate and the spout dog.

Wherein, the base both sides still are equipped with the circuit board buckle respectively, and the circuit board buckle is used for with circuit board fixed mounting on base upper portion.

And the two sides of the base are respectively provided with a pin buckling plate which is used for buckling and fixing the zero wire pin and the live wire pin in the transverse bending direction.

The number of the mutual inductors is two, and the number of the hard electric connecting wires penetrating through one of the mutual inductors is 2, and the hard electric connecting wires are used for connecting a zero wire and a live wire.

And the number of the hard electric connecting wires penetrating through the other mutual inductor is 1, and the hard electric connecting wires are used for connecting the ground wire.

Third, beneficial effect

Compared with the prior art, the mutual inductor of the utility model adopts the design of the hard electric connecting wire, the mutual inductor structure of the utility model can directly replace the soft power line which needs to penetrate into the leakage protector originally, after the mutual inductor structure is installed, the power line can be electrically connected without penetrating into the leakage protector, the power line is connected with the circuit board, and meanwhile, all the parts can be fixed on the base from top to bottom, thereby greatly improving the installation efficiency of the leakage protector and being beneficial to automatic assembly;

furthermore, the leakage protector of the utility model has a simple structure, and through the structural optimization of the leakage protector device and the simplification of the structure and the size of the base, particularly, the structure setting of the clamping fixation of the pins, the clamping structure setting of the electromagnetic driving device and the structure setting of the pressing guide block not only make the structure of the leakage protector more compact, but also have a smaller volume; meanwhile, the leakage protector can be miniaturized, and the application range of the leakage protector is wider.

Drawings

Fig. 1 is a perspective view of an embodiment 1 of the transformer apparatus of the present invention;

fig. 2 is an exploded view 1 of the transformer apparatus of the present invention;

fig. 3 is an exploded view 2 of the transformer apparatus of the present invention;

fig. 4 is a perspective view of the leakage protector of the present invention;

fig. 5 is an exploded view of the leakage protector of the present invention;

FIG. 6 is a structural view of the base of the present invention;

FIG. 7 is an exploded view of a portion of the structure of the leakage protection device of the present invention;

fig. 8 is an exploded view of the leakage protector with a case according to the present invention;

fig. 9 is a perspective view of an embodiment 4 of the transformer apparatus of the present invention;

fig. 10 is a perspective view of the leakage protector according to embodiment 5 of the present invention;

fig. 11 is a perspective view of a transformer apparatus according to embodiment 5 of the present invention;

in the figure: 1 is a mutual inductor device; 2 is a base; 3 is a circuit board; 4 is a leakage protection device; 5 is a zero line pin; 6 is a live wire pin; 7 is a ground wire pin; 8 is a pin; 9 is a spring plate; 10 is a reset key; 12 is a reset stop block; 13 is a pressing guide block; 14 is an electromagnetic driving device; 15 is a zero line spring plate; 16 is a live wire shrapnel; 18 is a test key; 19 is an electrical connection contact; 20 is a bayonet; 23 is a movable iron core; 24 is a buckling piece; 26 is a fastening groove; 28 is a sliding groove; 29 is a waterproof spacer; 31 is a pressing arm; 32 is an extension end; 33 is a pin buckle; 34 is a vertical clamping groove; 35 is a spring plate clamping part; 36 is the electromagnetic device clamping part; 37 is a circuit board buckle plate; 38 is a circuit board positioning column; 39 is a chute stop block; 40 is a protective plate; 41 is an electric connection terminal; 42 is a transformer shell; 43 is a mutual inductance coil; 44 is a hard electrical connection wire; 45 is a coil pin; 46 is a containing cavity; 47 is a coil sleeving connection column; 48 is an electric connecting wire clamping groove; 49 is a through hole.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example 1:

the transformer suitable for automatic installation according to the embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, comprises a transformer device 1, wherein the transformer device 1 comprises a transformer housing 42, a mutual induction coil 43 disposed inside the transformer housing 42, a hard electrical connection wire 44 penetrating through the transformer housing 42 and passing through an inner ring of the mutual induction coil 43, and a coil pin 45 extending outward; the hard electrical connection wires 44 and the coil pins 45 are electrically connected to the wiring board 3, respectively.

As shown in fig. 1, in the present embodiment, an accommodating cavity 46 and a coil sleeving column 47 are provided in the transformer housing 42, the mutual inductor 43 is sleeved on the coil sleeving column 47 and is located in the accommodating cavity 46, a through hole 49 is provided on the coil sleeving column 47, the hard electrical connection wires 44 pass through the through hole 49, specifically, in the present embodiment, the number of the hard electrical connection wires 44 is 2, which are respectively used for connecting a neutral wire and a live wire in a power line, the corresponding wire-sleeved connecting post 47 is provided with 2 through holes 49, the 2 through holes 49 are arranged side by side left and right, each hard electric connecting wire 44 extends out of two connecting ends, the two connection ends are bent along an electrical connection wire slot 48 described below, specifically, the electrical connection wire slot 48 is disposed on each of two opposite side walls of the transformer case 42, and two ends of the hard electrical connection wire 44 passing through the through hole 49 are bent along the electrical connection wire slot 48.

In this embodiment, coil pin 45 and stereoplasm electricity link 44's link all upwards sets up along the axis direction of the mutual induction coil 43 of perpendicular to, circuit board 3 is located mutual-inductor shell 42 upper portion, can be directly connect the pin of four links of stereoplasm electricity link 44 and coil pin 45 and circuit board grafting realization electricity and be connected, it is inside that the earth-leakage protector is directly worn into to generally adopt soft power cord among the current earth-leakage protector, lug connection such as shell fragment, in the assembly installation process, can't carry out the automatic assembly, this part can only adopt the manual work to install, and the mutual-inductor structure of this embodiment can directly will penetrate the inside soft power cord of earth-leakage protector and replace originally, after mutual-inductor structrual installation is good, the power cord need not penetrate the inside electricity connection that can realize of.

Example 2:

as shown in fig. 4, 5, 6, 7 and 8, the earth-leakage protector of the present embodiment includes: the leakage protector comprises a base 2 of the leakage protector, a leakage protector 4 arranged on the base 2, pins 8 which penetrate through the base 2 and extend out of the bottom of the base 2, and a circuit board 3; the leakage protection device 4 comprises a reset key 10, a reset stop block 12, a pressing guide block 13, an electromagnetic driving device 14 and an elastic sheet 9;

two vertex angles of the base 2 are respectively provided with an elastic sheet clamping part 35, the electromagnetic device clamping part 36 is positioned between the two elastic sheet clamping parts 35, and the electromagnetic device clamping part 36 is used for fixing the electromagnetic driving device 14 on the base 2; the reset stop block 12 is arranged between the pressing guide block 13 and the electromagnetic driving device 14, the elastic sheet clamping parts 35 are positioned at two sides of the electromagnetic driving device 14, and the elastic sheets 9 are respectively embedded on the two elastic sheet clamping parts 35; the pressing guide block 13 is used for pressing and fixing the pin 8,

in this embodiment, the reset block 12 is movably mounted in the middle of the base 2 up and down, specifically, the upper portion of the base 2 is provided with a sliding groove 28 which enables the reset block 12 to be inserted into the base 2 from top to bottom, the reset block 12 can move up and down relative to the sliding groove 28, two sides of the reset block 12 are provided with extending ends 32 which can be abutted against the elastic sheet 9, and the elastic sheet 9 and the pins 8 can be controlled to be electrically connected through the extending ends 32;

specifically, the method comprises the following steps: the pins 8 in this embodiment include a neutral pin 5, a live pin 6 and a ground pin 7; a sliding groove stop block 39 is arranged on one side of the sliding groove 28, the pressing guide block 13 can be arranged on the base 2 from top to bottom along the guide of the sliding groove stop block 39, and the ground wire pin 7 is pressed and fixed on the base 2 through the bottom of the pressing guide block 13;

as shown in fig. 1, a vertical slot 34 is further formed in the outer side of the sliding groove stopper 39, and the vertical slot 34 is used for clamping and fixing the zero wire pin 5 and the live wire pin 6 in the vertical bending direction; the two sides of the pressing guide block 13 are respectively provided with a pressing arm 31 which extends out, and the zero wire pin 5 and the live wire pin 6 are respectively pressed and fixed in the vertical clamping groove 34 through the pressing arms 31; thereby ensuring that the zero wire pin 5 and the live wire pin 6 are firmly fixed on the base 2; in addition, the zero wire pin 5 and the live wire pin 6 are provided with an extended electric connection end 41 along the bottom of the pressing arm 31, and the elastic sheet 9 is electrically connected with the zero wire pin 5 and the live wire pin 6 through the electric connection end 41; and the end parts of the two pressing arms 31 are provided with protective plates 40 extending downwards, and elastic sheet moving spaces are formed between the protective plates 40 and the sliding chute stop blocks 39.

Further, since the circuit board 3 is disposed on the upper portion of the base 2, and the upper end surface of the pressing arm 31 is used for supporting the circuit board 3, that is, the circuit board 3 abuts against the upper end surface of the pressing arm 31, the pressing arm 31 plays a role of supporting the circuit board 3.

As shown in fig. 1, the electromagnetic driving device 14 can drive the movable iron core 23 penetrating through the interior thereof to perform a linear motion, an extending end of the movable iron core 23 is clamped with a vertical end of the clamping sheet 24, and the reset stopper 12 is provided with a clamping groove 26 for inserting a transverse end of the clamping sheet 24; the reset key 10 vertically penetrates through the circuit board 3 and is inserted into the reset stop block 12, and the transverse end of the buckle piece 24 can be clamped with the reset key 10, so that the reset key 10 can drive the reset stop block 12 to move up and down; specifically, the locking piece 24 is a metal piece with U-shaped openings at two ends and bent, wherein the U-shaped opening at the vertical end is locked with the movable iron core 23, the U-shaped opening at the other transverse end can be inserted into the locking groove 26, one end of the reset key 10 inserted into the reset stopper 12 is provided with a bayonet 20 in locking fit with the locking piece 24, the locking piece 24 can be inserted into the locking groove 26 under the action of a spring or an electromagnetic device 22 and is locked with the bayonet 20 on the reset key 10, so that the reset key 10 and the reset stopper 12 are fixed together to realize locking, in the locked state, pressing down the reset key 10 can enable the reset stopper 12 to drive the elastic piece 9 to move down, or the elastic piece 9 moves down under the action of self elasticity to be separated from the pin 8 to cut off the power, resetting key 10 moves up under the action of the reset spring to enable the reset stopper 12 to drive the elastic piece 9 to move up, so that the elastic sheet 9 contacts with the pin 8 to be electrified, wherein the reset spring is sleeved on the reset key 10, and two ends of the reset spring are respectively abutted against the circuit board 3 and the reset key 10.

The working principle of the embodiment is as follows:

as shown in fig. 2, in a normal state, the neutral spring plate 15 and the live spring plate 16 are normally connected to the corresponding neutral pin 5 and the corresponding live pin 6; when the reset key 10 is pressed down, the extending ends 32 at the two sides of the reset stop 12 synchronously move downwards to release the limiting effect of the downward movement of the zero line elastic sheet 15 and the live line elastic sheet 16, so that the zero line elastic sheet 15 and the live line elastic sheet 16 move downwards under the action of the self elasticity, and the elastic sheet 9 is separated from the pin 8, namely, the power failure is realized; when the reset button 10 is reset upwards, the reset stop 12 drives the extending end 32 to move upwards, so as to drive the zero wire spring piece 15 and the live wire spring piece 16 to move upwards and respectively contact with the zero wire pin 5 and the live wire pin 6 to be electrified.

In this embodiment, base 2, the device 4 is protected to the hourglass of setting on base 2, wear to establish on base 2 and from base 2 bottom stretch out participate in 8, and circuit board 3, wholly be by the structure that stacks supreme down, install promptly on base 2 in proper order and participate in 8, leak and protect device 4 and circuit board 3, structure on the earth-leakage protector base can be applicable to automatic assembly promptly, combine mutual-inductor device 1 among embodiment 1 simultaneously, can make whole earth-leakage protector structure can both carry out automatic assembly, production efficiency and product quality have been improved greatly.

Example 3:

compare in embodiment 2, in this embodiment, 2 both sides of base still are equipped with circuit board buckle 37 respectively, and circuit board buckle 37 is used for with 3 fixed mounting of circuit board on 2 upper portions of base, further guarantees the firm fixed of circuit board, makes mounting structure simpler simultaneously, makes base 2 and circuit board fix through the mode of joint, need not the manual work and consolidates it.

Two sides of the base 2 are respectively provided with a pin buckle plate 33, and the pin buckle plates 33 are used for clamping and fixing the zero wire pin 5 and the live wire pin 6 in the transverse bending direction, so that the installation and fixation of the zero wire pin 5 and the live wire pin 6 are more convenient.

At least two circuit board positioning columns 38 are further arranged in the middle of the base 2, and the circuit board positioning columns 38 are used for positioning a circuit board mounted on the base 2.

In the earth leakage protector of the present embodiment, as shown in fig. 8, the earth leakage protection device 4 further includes a test button 18, and the test button 18 is located between the circuit board 3 and the casing of the earth leakage protector; the shell is provided with a through hole correspondingly matched with the reset key 10 and the test key 18; waterproof spacers 29 are arranged between the reset key 10 and the test key 18 and the shell, so that the waterproof effect is greatly improved.

Example 4:

compared with embodiment 1, in this embodiment, as shown in fig. 9, the number of the hard electrical connection wires 44 is 1, and the hard electrical connection wires are used for connecting the ground wires in the power supply wires; according to the structure needs of different products, can also establish stereoplasm electric connecting wire 44 into 3 or above, this mutual-inductor structure can directly will originally need to penetrate the inside soft power cord of earth-leakage protector and replace, and after the mutual-inductor structrual installation, the power cord need not penetrate inside the earth-leakage protector and can realize the electricity and connect.

Example 5:

compared with embodiment 1, in this embodiment, as shown in fig. 10 and 11, the number of the mutual inductors 43 is two, the number of the hard electrical connection wires 44 penetrating through one of the mutual inductors 43 is 2, the hard electrical connection wires are used for connecting the zero line and the live line, and the ground wire penetrating through the other mutual inductor 43 can be a soft power wire; according to actual needs, 1 hard electric connecting wire 44 can also be arranged to pass through the other mutual induction coil 43 for connection of the ground wire.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A mutual inductor suitable for automatic installation, which is characterized by comprising a mutual inductor device (1), wherein the mutual inductor device (1) comprises a mutual inductor shell (42), a mutual inductor (43) arranged inside the mutual inductor shell (42), a hard electric connecting wire (44) which is arranged on the mutual inductor shell (42) in a penetrating way and penetrates through the inner ring of the mutual inductor (43), and a coil pin (45) which extends outwards;

the hard electric connecting wire (44) and the coil pin (45) are respectively and electrically connected with the circuit board (3).

2. The transformer suitable for automatic installation according to claim 1, wherein a containing cavity (46) and a coil sleeving column (47) are arranged in the transformer shell (42), the mutual inductor (43) is sleeved on the coil sleeving column (47) and located in the containing cavity (46), a through hole (49) is formed in the coil sleeving column (47), and the hard electric connecting wire (44) penetrates through the through hole (49).

3. The transformer suitable for automatic installation according to claim 2, wherein the transformer shell (42) is provided with electrical connection wire slots (48) on two opposite side walls, and two ends of the rigid electrical connection wire (44) passing through the through hole (49) are bent along the electrical connection wire slots (48).

4. A mutual inductor adapted for automated installation according to claim 3, characterised in that the number of said rigid electrical connections (44) is 2, for connection of neutral and live wires respectively in the power line.

5. A transformer adapted for automated installation according to claim 3, characterised in that the number of rigid electrical connections (44) is 1 for connection of ground in a power supply line.

6. A transformer adapted for automated assembly according to claim 1, characterised in that the connection ends of the coil pins (45) and the rigid electrical connection wires (44) are arranged upwardly in a direction perpendicular to the axis of the mutual coil (43), the circuit board (3) being located in the upper part of the transformer housing (42).

7. A earth-leakage protector with a mutual inductor suitable for automatic installation according to any claim 1-6, characterized in that the earth-leakage protector comprises: the leakage protector comprises a base (2), a leakage protector device (4) arranged on the base (2), pins (8) which penetrate through the base (2) and extend out of the bottom of the base (2), a mutual inductor device (1) located on one side of the base (2), and a circuit board (3) arranged on the upper portions of the base (2) and the mutual inductor device (1).

8. A leakage protector according to claim 7, characterized in that the leakage protector (4) comprises a reset button (10), a reset stop (12), a pressing guide block (13), an electromagnetic driving device (14) and a spring plate (9), wherein the spring plate (9) is embedded in the pin base (2);

the pressing guide block (13) is clamped and arranged on one side of the top of the pin base (2), and the pressing guide block (13) is used for pressing and fixing the pin (8);

the reset stop block (12) is movably arranged in the middle of the base (2) up and down, two sides of the reset stop block (12) are provided with extension ends (32) which can be abutted against the elastic sheet (9), and the elastic sheet (9) can be controlled to be electrically connected with the pins (8) through the extension ends (32);

the electromagnetic driving device (14) can drive the movable iron core (23) penetrating through the electromagnetic driving device to perform linear motion, the extending end of the movable iron core (23) is clamped with the vertical end of the clamping piece (24), and the reset stop block (12) is provided with a clamping groove (26) into which the transverse end of the clamping piece (24) can be inserted;

the reset key (10) vertically penetrates through the circuit board (3) and is inserted into the reset stop block (12), and the transverse end of the buckle piece (24) can be clamped with the reset key (10), so that the reset key (10) can drive the reset stop block (12) to move up and down;

the elastic sheet (9) can move downwards under the action of the elasticity of the elastic sheet (9) by pressing the reset key (10) so as to be separated from the pin (8) to cut off the power, and the reset key (10) can reset and move upwards under the action of the reset spring so that the reset stop block (12) drives the elastic sheet (9) to move upwards and contact with the pin (8) to be electrified.

9. A leakage protector according to claim 8, wherein the base (2) is provided at an upper portion thereof with a slide groove (28) for allowing the reset stopper (12) to be inserted into the base (2) from above, and the reset stopper (12) is movable up and down relative to the slide groove (28).

10. A earth leakage protector according to claim 9, characterized in that the pins (8) comprise a neutral pin (5), a live pin (6) and a ground pin (7); a sliding groove stop block (39) is arranged on one side of the sliding groove (28), the pressing guide block (13) can be installed on the base (2) from top to bottom along the guide of the sliding groove stop block (39), and the ground wire pin (7) is pressed and fixed on the base (2) through the bottom of the pressing guide block (13);

the outer side of the sliding groove stop block (39) is also provided with a vertical clamping groove (34), and the vertical clamping groove (34) is used for clamping and fixing the zero wire pin (5) and the live wire pin (6) in the vertical bending direction; and two sides of the pressing guide block (13) are respectively provided with a pressing arm (31) which extends out, and the zero wire pin (5) and the live wire pin (6) are respectively pressed and fixed in the vertical clamping groove (34) through the pressing arms (31).

11. A earth-leakage protector according to claim 10, characterized in that the neutral pin (5) and the live pin (6) are provided with electrical connection terminals (41) extending along the bottom of the pressing arm (31), and the resilient plate (9) is electrically connected to the neutral pin (5) and the live pin (6) via the electrical connection terminals (41).

12. A leakage protector according to claim 10, characterized in that the ends of the pressing arms (31) are provided with downwardly extending protection plates (40), and a spring plate moving space is formed between the protection plates (40) and the chute stopper (39).

13. A leakage protector according to claim 7, characterized in that circuit board clips (37) are respectively arranged on two sides of the base (2), and the circuit board clips (37) are used for fixedly mounting the circuit board (3) on the upper part of the base (2).

14. A leakage protector according to claim 10, characterized in that the base (2) is further provided with pin retaining plates (33) on both sides, the pin retaining plates (33) are used for clamping and fixing the neutral pin (5) and the live pin (6) in the transverse bending direction.

15. A mutual inductor adapted for automated installation according to claim 1, characterised in that the number of mutual inductors (43) is two and the number of rigid electrical connections (44) passing through one of the mutual inductors (43) is 2 for connection of neutral and live wires.

16. A transformer adapted for automated mounting according to claim 15, characterised in that the number of rigid electrical connection wires (44) passing through the other transformer coil (43) is 1 for connection to earth.